Oxidation of aqueous p-Nitroaniline by pulsed corona discharge

Balachandramohan, Jayachandrabal; Tikker, Priit; Preis, Sergei

doi:10.1016/j.seppur.2022.121473

Cited by 9 publications

(4 citation statements)

References 32 publications

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“…3,4 In addition, once improperly released into the environment, it will pose a long-term threat to humans and the environment because of its difficulty in degradation. 5 Therefore, it is of great significance to achieve high selectivity and high sensitivity in the detection of PNA to ensure the health of the surrounding environment.…”

Section: Introductionmentioning

confidence: 99%

Selective identification of p-nitroaniline by bromine-mediated polarization of carbon dots

Li,

Liu,

Wang

et al. 2024

Analyst

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Section: Introductionmentioning

confidence: 99%

Selective identification of p-nitroaniline by bromine-mediated polarization of carbon dots

Li,

Liu,

Wang

et al. 2024

Analyst

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“…Therefore, the study of new technologies for the treatment of 4NA-contaminated water is a topic of great scientific interest. Several processes have been described for the removal of 4NA from water sources, including biodegradation [ 6 , 7 , 8 , 9 ], oxidation [ 10 ], reduction [ 11 , 12 ], adsorption [ 13 , 14 , 15 ], advanced oxidation processes [ 16 , 17 , 18 , 19 ] and pressure-driven membrane processes [ 20 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

Efficiency, Kinetics and Mechanism of 4-Nitroaniline Removal from Aqueous Solutions by Emulsion Liquid Membranes Using Type 1 Facilitated Transport

León,

Hidalgo,

Gómez

et al. 2024

Membranes

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4-Nitroaniline (4NA) is a common organic pollutant that is released into the environment during the manufacture and processing of a wide variety of industrial products. This article describes the use of an emulsion liquid membrane process to remove 4NA from aqueous solutions using a type 1 facilitated transport mechanism. Optimization of the removal process was carried out by analyzing the efficiency of 4NA removal from the feed phase and the initial apparent feed/membrane fluxes and permeabilities under different experimental conditions. The kinetics of the removal process was analyzed using a simplified mass transfer model involving an empirical mass transfer coefficient calculated from experimental data, assuming that the concentrations of 4NA in the external aqueous phase and in the internal w/o emulsion are uniform. The results show that there is a very good fit between the experimental and model data and that the variation in the values of the overall mass transfer coefficients with the experimental conditions coincides with that of the removal efficiency mentioned above. The transport mechanism was studied by identifying the rate-controlling step of the removal process, using models described for adsorption processes, due to the strong parallelism between the transport mechanisms in adsorption and emulsion liquid membrane processes.

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“…Organic contaminants and nitroarenes are abundant in sewage and may be poisonous and carcinogenic, causing signi cant di culties for aquatic creatures [10][11][12][13]. Damage to aquatic ecosystems and direct effects on human health make water pollution a major problem [5,6].…”

Section: Introductionmentioning

confidence: 99%

Fast catalytic degradation of organic dyes in aqueous media using copper sulfate deposited on biowaste-derived hydroxyapatite

Yarahmadi

Rezakazemi

Sheibani

et al. 2023

Preprint

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Conversion of biowastes into valuable products will assist sustainable development and waste management. Eggshell could be used as a bio-template for the synthesis of hydroxyapatite and widely applied in the field of catalytic processes. In this study, copper sulfate supported on hydroxyapatite (CuSO4@HAP) was rationally fabricated using biowaste eggshells (ES) by hydrothermal method and it was used for the fast catalytic degradation of organic pollutant dyes (OPDs) such as methylene blue (MB), 4-nitrophenol (4-NP) and 4-nitroaniline (4-NA) in the presence of sodium borohydride (NaBH4) in aqueous media. The physical and chemical properties of CuSO4@HAP were characterized via FTIR, XRD, BET, TEM, FE-SEM/EDS, and elemental mapping analyses. Results indicated that the synthesized catalyst was crystalline with great purity, homogeneous with fine particles, and mesoporous with a high specific surface area. Besides, the reaction progress was evaluated using a double-beam UV-vis spectrophotometer. The reaction conversion (%) under optimal conditions rapidly increased to an equilibrium state (99% for 4-NP, 96% for 4-NA, and 99.5% for MB) within a short time (t < 10 min). In addition, the catalytic rate constant of MB, 4-NP, and 4-NA in the presence of NaBH4 and CuSO4@HAP was calculated to be about 0.514, 0.492, and 0.317 min− 1, respectively. This study demonstrates the potential use of natural HAP-derived catalyst from biowaste eggshell with high efficiency and stability for degrading OPDs under mild reaction conditions. Additionally, CuSO4@HAP could be effectively separated and reused for four cycles with almost the same catalytic efficacy.

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Oxidation of aqueous p-Nitroaniline by pulsed corona discharge

Cited by 9 publications

References 32 publications

Selective identification of p-nitroaniline by bromine-mediated polarization of carbon dots

Selective identification of p-nitroaniline by bromine-mediated polarization of carbon dots

Efficiency, Kinetics and Mechanism of 4-Nitroaniline Removal from Aqueous Solutions by Emulsion Liquid Membranes Using Type 1 Facilitated Transport

Fast catalytic degradation of organic dyes in aqueous media using copper sulfate deposited on biowaste-derived hydroxyapatite

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